Improvement in stop-nozzles for hose-pipes



Patented March 31, 1874 A. WORK.

Imaan/50i".

UNITED STATES PATENT OFFICE.

ALANsON WORK, OEv PROVIDENOE, RHODE' IsLAND.

IMPROVEMENT IN STOP-NOZZLES FOR HOSE-PIPES.

Specification forming part of Letters Patent N0. 149,086, dated March31, 1874; application filed February 5, 1874.

To all whom it may concern:

Be it known that I, ALANsON WORK, of the city and county of Providence,in the State of Rhode Island, have invented certain -new and usefulImprovements in Stop-Nozzles for HoseIipes.

My improvements relate to that class of nozzles in which thedelivery-aperture is closed by the rotation of a portion of the nozzle;and my invention consists in the novel combination of a rotatingthreaded sleeve, a plug-valve, and a toothed plate axially attached tosaid valve, whereby, when the sleeve is rotated, the valve will also berotated, and the bore of the nozzle be opened or closed; and I do herebydeclare that the following specification, taken in connection with thedrawings forming a part of the same, is a clear and true description ofa stop-nozzle embodying my improvement.

Referring to the drawings, Figure l represents one of my nozzles inperspective. Figs. 2 and 3 represent the same in longitudinal verticalsection. Fig. 4 represents the base of the nozzle with the tip and thesleeve removed. Fig. 5 represents the sleeve in section.

In each figure, A denotes the base Of the nozzle; B, the tip, and C therotating sleeve.

The base is provided at its lower or rear end with an internal screw, a,for engaging with a hose-pipe'in the usual manner. At its upper end itis provided with an exterior screw, b, whereby it is connected to thenozzle-tip B by engaging therewith the internal screw c. The baseoi''the nozzle has three different exterior diameters, the lower endbeing the largest for a sufficient distance to aiiord the properthreaded recess for connection with the hose-pipe. Next above itsdiameter is abruptly lessened, forming the shoulder at d and for agreater portion of its length this diameter is maintained until at itstop it is j again reduced slightly for receiving the exte- Y prevent itslongitudinal movement. D denotes the plug-valve, with the usual circularpassage f, which corresponds in size with the bore of the tip. As iscommon with plug-valves, this is fitted to a tapering seat. At itssmallest end the plug is provided with anaxial extension, as at g, whichis threaded to receive a nut. In the base of the nozzle, adjacent thereAto, is an annular recess, to which a washer, h, is fitted, which, withor without an interposed layer of packing, will, by the pressure inducedby the nut, maintain a water-tight joint. The

larger end or head of the plug-valve has also l an axial projection, asat i, to which is fitted a segmental gear-plate, E, secured thereto, inthis instance, by means of a dowel-pinprojecting from its inner faceinto a hole in the end of the plug-valve adjacent to its outer edge.The'gear-plate has two stop-shoulders, 7c, which are formed by cuttingout a segmental portion of the periphery of the plate, and serve as ameans for limiting its range of rotative movement by contact with astoppin, l, which projects upward from the interior of the base, andoccupies a position closely in rear of the large end of the plug.

The gear-plate may be made of brass, bronze, or steel; but if the lattermetal be used, which is preferable, it would be advisable to plate itwith nickel to obviate corrosion.

Between the gear-plate E and the coincident end of the plug, anexpansive packing may be placed, if necessary, whereby, when the plateis forced toward the plug by the screw m, which enters a threaded holein the center of the plug, the packing may be forced outward, and byengaging with the sidesof the recess or combination of the valve-seat, amater-tight joint may be maintained.

Vithin the sleeve C, encircling its inner periphery, is a raised spiralthread with square sides and edges, as at a, with sufcient space betweenthe threads to receive the teeth of the gear-plate E. In practice thepitch of the thread may be varied to meet special requirements.

In operation, with the several parts properly adj usted, the rotation ofthe sleeve to the right hand will close the valve, and a reversemovement will open it.

The advantages accruing from my present improvement may be fairly statedas simplicity in construction7 economy of metal andmanu- Thecombination, in a stop-nozzle7 of the rofaeture, and great durability ofthe operative tating sleeve, having a threaded interior7 with mechanism.the plug-Valve and the gear-plate, communi- Under the highest pressureattainable in a eating direct with the plug and the sleeve, line ofhose, the plug-valve may be closed with substantially as described.

ease, by reason of the direct connection of the ALANSON VORK. threadedsleeve with the gear-plate and plug. Witnesses:

Having thus described my invention, I claim JOHN C. PURKIs, as new7 tobe secured by Letters Patent-4 R. J. GILMORE.

